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  <title>登录 FTP 服务器</title>

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</div><hr /><div id="function.ftp-login" class="refentry">
   <div class="refnamediv">
    <h1 class="refname">ftp_login</h1>
    <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">ftp_login</span> &mdash; <span class="dc-title">登录 FTP 服务器</span></p>

   </div>
 <div class="refsect1 description" id="refsect1-function.ftp-login-description">
  <h3 class="title">说明</h3>
    <div class="methodsynopsis dc-description">
     <span class="type">bool</span> <span class="methodname"><strong>ftp_login</strong></span>
      ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$ftp_stream</code></span>
     , <span class="methodparam"><span class="type">string</span> <code class="parameter">$username</code></span>
     , <span class="methodparam"><span class="type">string</span> <code class="parameter">$password</code></span>
     )</div>

    <p class="para rdfs-comment">
     使用用户名和密码登录入给定的 FTP 连接。
    </p>
   </div>

 <div class="refsect1 parameters" id="refsect1-function.ftp-login-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">ftp_stream</code></em></dt>

     <dd>

      <p class="para">
       FTP 连接的链接标识符。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">username</code></em></dt>

     <dd>

      <p class="para">
       用户名（<em>USER</em>）。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">password</code></em></dt>

     <dd>

      <p class="para">
       密码（<em>PASS</em>）。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.ftp-login-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
   如果登录失败，PHP 会抛出一个警告。
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.ftp-login-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4195">
    <p><strong>Example #1 <span class="function"><strong>ftp_login()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />$ftp_server&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"ftp.example.com"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$ftp_user&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"foo"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$ftp_pass&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"bar"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">//&nbsp;设置一个连接或失败时退出<br /></span><span style="color: #0000BB">$conn_id&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ftp_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$ftp_server</span><span style="color: #007700">)&nbsp;or&nbsp;die(</span><span style="color: #DD0000">"Couldn't&nbsp;connect&nbsp;to&nbsp;</span><span style="color: #0000BB">$ftp_server</span><span style="color: #DD0000">"</span><span style="color: #007700">);&nbsp;<br /><br /></span><span style="color: #FF8000">//&nbsp;尝试登录<br /></span><span style="color: #007700">if&nbsp;(@</span><span style="color: #0000BB">ftp_login</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$ftp_user</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$ftp_pass</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"Connected&nbsp;as&nbsp;</span><span style="color: #0000BB">$ftp_user</span><span style="color: #DD0000">@</span><span style="color: #0000BB">$ftp_server</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}&nbsp;else&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"Couldn't&nbsp;connect&nbsp;as&nbsp;</span><span style="color: #0000BB">$ftp_user</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;关闭连接<br /></span><span style="color: #0000BB">ftp_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">);&nbsp;&nbsp;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>  
    </div>

   </div>
  </p>
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